Patent References 1310437 1575388 3813201 3825457 Method of making seamless hollow molded articles Shoe sole molds Process for manufacturing closed hollow bodies in elastomeric material Insole, apparatus for molding and method of making shoes Patent #: 4372525 InventorApplicationNo. 710769 filed on 06/04/1991US Classes:36/28, Cushion36/25R, SOLES36/29PneumaticExaminersPrimary: Sewell, Paul T.Assistant: Patterson, M. D. Attorney, Agent or FirmForeign Patent References
International ClassesA43B 013/18A43B 013/20 A43B 013/00 AbstractAn athletic shoe has an air pressurizable inner sole received in a compartment between the sole and the upper so as to be free to move therein except for the location at which the valve formation of the inner sole passes through the wall of this compartment. | |